Regenerative oven



Juljr 16, 1935. c. o'rTo REGENERATIVE OVEN Filed April 24, 1935 INVENToRwe am B @gm ATTORNEY Patented July 16, 1935 UNITED STATES PATENT OFFICEREGENERATIVE OVEN Carl Otto, Essen, Germany Application April 24, 1933,Serial No. 667,585

Germany January 23, 1932 7 Claims. (Cl. 20,2-14-3) The invention relatesto chamber ovens opervidedon the upper end of the vertical chambersating with regenerators, more particularly ovens which aperture can beclosed by means of a plug. intended for the production oi coke and gas,in In ovens where vertical strong gas channels are which theregenerators serving for preheating arranged in the same regeneratorpartition, the

the media of combustion, viz. air or gas and air, vertical chambersaccording to the invention may 5 and those taking up the heat of thewaste gases be in permanent or temporary communication are arranged inparallel to one another alternawith an adjacent one of these strong gaschantively in the same row: The invention has for nels through aninclined passage rising toward its object to avoid the transition ofpreheated air the channel 10 or preheated gas from the preheatingregener- The effect of the vertical chambers of the in- 10 ators to thewaste heat regenerators, which obvention may be increased still byproviding a ject is obtained by va new and peculiar construcstone bondin which the vertical chambers are tion of the partitions existinglbetween the regenformed by two vertical rows of bricks which formerators which are fed in opposite direction. This between them a jointextending in parallel with object is achieved according to the inventionby the longitudinal direction of the partitions. Con- ;I

vertical chambers being provided in the regensequently, upon leakage ofthis joint the mass erator partitions which 4chambers are closed atcontained in the vertical chambers cannot penebottom and terminatesomewhat below the upper trate yet 'nvthe regenerators and obstructthem. edge of the regenerators. They are lled with a In order to furtherexclude this possibility, the

refractory mass which has but little or no tenjoint running in thelongitudinal direction of the 20 dency to agglomerate or form bead likemasses. partition which is between the two rows of bricks In ovens of adesign in which a gas not to be prethat form a chamber between them, maymeet heated (strong gas) is supplied through pastransverse joints whichlikewise do not run up sages which vertically extend in the regeneratorto the partitions of the regenerators.

partitions and directly open into the individual When joints occur inthe partitions of the re- 25 heating lues of the oven chambers, the saidvergenerators under the action of the pushing and tical chambers aredisposed between the gas supshearing forces the regenerator brickwork isex- .ply passages, seen in the longitudinal direction 0f posed to inservice, these joints, immaterially the partition. whether horizontal orvertical, iill themselves 3o The refractory mass the vertical chambersare with the mass contained in the vertical chambers 3o filled with mustIlot COHglOmerate 1101 have the without this mass, provided it has thesuitable natendency to purling, in a degree as'i'or instance ture, beingcapable to advance up to the regen- Ordinary, not disintegrated Sand.Furthermore, erator chambers. Theprovision of the vertical the masseither has to be in a burnt out state, chambers in the regeneratorpartitions therefore Such aS fOr instance burnt Clay (le Clay) 0r aiordsa reliable protection from the transition 35 to`have -the consistency ofcertain dry mortar of preheated gas or preheated air to the wastemixtures. At any rate the maSS must not undelheat regenerators andallows in designing ovens go changes in structure when exposed to 'thetemof the type under consideration to make these Delatules prevailing inthe regenerat01`s The de" partitions comparatively thin, as a result of40 sired avoidance of an agglcmerating tendency is which a larger numberof regenerators may be 40 obtained best by an extremely ne grain whichis provided or the height of the oven brickwork reachieved in asatisfactory degree by using burnt duced fire clay, dry n lOtal miXtulES0T Sand and Te' In order that the invention may be clearly un- Sults ma' .conslderab1eincrease. the Sprfa'ce derstood and readily carried intoeffect, two emgngusnlsls ptllggviltdlgtic'lfh bodiments of the inventionare illustrated by way bers already in the erection of the ovens andOf.examp1e m the afccompanymg drawmg as applied to regenerative chamberovens. In the manentl remains therein. When a oint ocs that Cmmumcateswith a vetical hamber, rst embodiment the vertical chambers provided themass enters it from the Chamber and tightens in the partitions betweenthe regeiierators and it, but in so doing the mass is consumed to someextending between the strong gas channels comextent. Therefore, it isdesirable to provide the municate with an adjacent Strong gas channel,possibility of re-fllling the chambers with the Whilst in the otherembodiment they communifine grained mass. To this end 'an apertureleadcate with adjacent parts of regenerator chaming to one of theadjacent regenerators is probers. 55

In the drawing Figures 1a to 1o are vertical sections of a regeneratorpartition in its longitudinal direction on line I-I of Figures 2a to 2c,Figure 1a and 1c showing the first embodiment and Figure 1b the otherembodiment. Figures 2a and 2c relate to the first and Figure 2b to theother embodiment and are horizontal sections of the regenerators onlines A-A, B-B and C-C of Figures 1a to 1c,

Figure 3 relates to the other embodiment and is a vertical sectionnormal to that represented in Figure 1b, on line III- III of Figure 2b.

Y Referring to this drawing, a denotes the regenerator chambers whichare arranged in parallel ln a row in the longitudinal direction of anoven battery. b, Figure 3, are passages connecting the regenerators withthe rows of heating nues c alternating with the coking chambers d. Eachtwo regenerator chambers a serving to preheat the media of combustion(weak gas and air) alternate in the longitudinal direction of thebatter: with two regenerators a which take up the hea d the waste gases.Upon reversal of the draft, the regenerators exchange their action.Therefore, in the two different stages of operation of the ovens apreheating regenerator space exists on the one side of the partition eand on the other side a waste heat regenerator chamber.

The partitions e include in a manner known in itself vertical gas supplychannels f formed by bricks g of square section, see Figure 2a, andopening into the burners h which project into the heating flues. Thebricks i1 and i2 adjacent to the bricks g form between them verticalchambers k which are filled with the refractory non-agglomerated massdescribed above. The vertical joint existing between the bricks i1 and4iz and running in the longitudinal direction of the partitlons e at itsends meets transverse joints which owing to the peculiar design of thebricks ofthe bond do not immediately run up to the adjacent regeneratorchambers a so that the mass entering from the vertical chambers 1c thejoint obstructs the latter and prevents transition of gas and air, butcannot enter the regenerator itself. In the embodiment illustrated inFigures 1a, 1c and 2c the vertical chambers k by inclined passages mcommunicate with an adjacent strong gas channel. Hence, the mass can bere-iilled into the chambers AIi: even during the operation of the oven.

y In the other embodiment illustrated in Figures 1b, 2b and 3 aconnecting passage n extends from the top of the chambers kto anadjacent regenerator chamber and is closed by a plug o during theoperation of the oven. When the brickwork of the regenerators isre-bulit, the plugs o temporarily may be withdrawn and the chambers kre-fllled with the mass.'Y

I claim:

l. A regenerative oven of the class described comprising `a plurality ofregenerators and masonry partition walls each separating two adjacentregenerators in which the gas pressures are normally different and eachformed with vertical chambers closed at their lower ends, and a finegrained mass of granular refractory material in each of said chambers.

2. A regenerative oven of the class described comprising a plurality ofelongated regenerators arranged side by side and elongated masonrypartition walls each separating two adjacent regenerators in which thegas pressures are normally different and heating Walls one above andextending longitudinally of each of said partition walls and containingflues distributed longitudinally of said wall, each of said partitionwalls being formed with a plurality of vertically disposed gas supplychannels distributed along the length of the wall, and communicatingwith the flues of the heating wall above it, and being formed withvertical chambers closed at their lower ends and alternating with saidchannels along the length of the partition wall, and a fine grained massof granular refractory material in each of said chambers.

3. An oven as specied in claim 1 in which each of the said partitionwalls is formed with passages each connecting a chamber in said wall toan adjacent regenerator, and in which removable blocks normally closesaid passages.

4. An oven as specified in claim 2 in which the upper ends of thechambers in each partition Wall do not extend upward above the tops ofthe adjacent regenerators, and in which each partition wall is formedwith passages each extending upwardly at an angle to the horizontal fromthe top of a chamber with which it communicates and connecting thelatter to an adjacent gas supplyA y channel, whereby said chambers maybe refilled with said granular material through said channels andpassages.

5. An oven as specified in claim 1 in which the fine grained mass ofgranular refractory material consists of ne burnt flreclay particles.

6. A coke oven as specified in claim 1 in which each partition wallcomprises two piles of bricks forming'the walls of each of the verticalchambers containing the granular material, and in which the jointsbetween the bricks in one, and the bricks in the other of said two pilesextend in a direction parallel to the sfdes of the wall facing theadjacentiregenerators.

7. An oven as specified in claim l in which each regenerator partitionwall is formed of bricks comprising two piles of bricks forming thewalls of each of the vertical chambers containing the granular materialand in which the joints between the bricksin one, and the bricks in'(the other of said two piles extend in a direction parallel to the sidesof the wall facing the adjacent regenerators, said wall also comprisingbricks providing joints which are transverse to the first mentionedjoints at the ends of the latter and terminate short of said faces.

`CARL O'I'I'O.

